Tipsarevic loses; Haas reaches Duesseldorf QFs

Top seed Janko Tipsarevic bowed out, while second-seeded German favorite Tommy Haas was among Wednesday's second-round winners at the $530,000 Power Horse Cup, a final French Open tune-up.

The struggling Serbian Tipsarevic gave way to 101st-ranked Argentine qualifier Guido Pella 7-6 (7-1), 6-1 in 89 minutes, while Haas came from behind to beat Croat Ivan Dodig 3-6, 6-4, 7-5 on the red clay at Rochusclub, which used to play host to the ATP World Team tournament. Tipsarevic is now a pedestrian 11-11 this year.

The 35-year-old Haas was tested mightily by the capable Dodig.

"I was close to losing, down 4-5, 15/30 in the third set. Ivan played a terrific match. It was tough conditions, with rain in between. It wasn't the best for my old bones," Haas said.